From patchwork series 394721

Fox Snowpatch · Fox Snowpatch · commit c9aaf1b5ca87 · 2024-02-13T05:32:58.000Z
https://patchwork.ozlabs.org//project/linuxppc-dev/list/?series=394721
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
@@ -662,8 +662,12 @@ u64 pseries_paravirt_steal_clock(int cpu)
 {
 	struct lppaca *lppaca = &lppaca_of(cpu);
 
-	return be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) +
-		be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb));
+	/*
+	 * VPA steal time counters are reported at TB frequency. Hence do a
+	 * conversion to ns before returning
+	 */
+	return tb_to_ns(be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) +
+			 be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb)));
 }
 #endif
 

Original file line number	Diff line number	Diff line change
`@@ -662,8 +662,12 @@ u64 pseries_paravirt_steal_clock(int cpu)`
`662`	`662`	`{`
`663`	`663`	`struct lppaca *lppaca = &lppaca_of(cpu);`
`664`	`664`
`665`		`- return be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) +`
`666`		`- be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb));`
	`665`	`+ /*`
	`666`	`+ * VPA steal time counters are reported at TB frequency. Hence do a`
	`667`	`+ * conversion to ns before returning`
	`668`	`+ */`
	`669`	`+ return tb_to_ns(be64_to_cpu(READ_ONCE(lppaca->enqueue_dispatch_tb)) +`
	`670`	`+ be64_to_cpu(READ_ONCE(lppaca->ready_enqueue_tb)));`
`667`	`671`	`}`
`668`	`672`	`#endif`
`669`	`673`